Does anyone know how much the stock ls wheels on the 2000 Integra weigh? I plan to get a set of 16' rota slips (to poor for the spoon) will I be going up in weight since the slipstreams will be 16's and my stock wheels are 15's?

Your wheels weigh about 15lbs stock and the 16" Slipstreams are somewhere around 14.5lbs.
http://www.wheelweights.net/